Hubungan Kecepatan Lari 40 Yard Dan Daya Ledak Otot Tungkai Dengan Hasil Lomp…

Background problem in this research is the low long jump results students of SMPN 7 Pasir Emas. This is presumably because of the 40 yard running speed and explosive power leg muscles. Therefore, the purpose of this study was to determine whether there is a relationship 40 yard running speed and explosive power leg muscles with long jump results squat style male students class VIII of SMPN 7 P…